condition mean min max 12pM Fe 18.1064 16.166 20.0468 58pM Fe 14.256239285714285 6.787978571428571 21.7245 233pM Fe 6.89177 6.89177 6.89177 1160pM Fe 6.212771845238096 4.150460833333334 8.275082857142857 Dark 10.121891133333333 8.165282266666667 12.0785 Light 5.741931615384615 5.741931615384615 5.741931615384615 Phloroglucinol 1.0504250000000002 1.0504250000000002 1.0504250000000002